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Electron transfer from triplet thymine and thymidine to lipoic acid

✍ Scribed by Zhi-Rui Lian; Si-De Yao; Wen-Feng Wang; Jian Luo; Jia-Shan Zhang; Nian-Yun Lin

Book ID: 103994407
Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 383 KB
Volume: 20
Category: Article
ISSN: 1011-1344
DOI: 10.1016/1011-1344(93)80139-z

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✦ Synopsis

Electron transfer from the triplet excited state of thymine or thymidine to the disulphide compound lipoic acid (RSSR) was studied using KrF laser flash photolysis (248 nm, 20 ns). The electron transfer reaction rate constants, measured at 310 nm, were determined to be 1.3X 10" M-' s-l and 6.9X 10' M-' s-l for thymine and thymidine respectively.

The transient absorbance at 400 nm in the presence of the quencher is attributed to the anion radical of lipoic acid.

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